Correlation Analysis
Costco Wholesale Corp vs Equinix, Inc. Common Stock REIT
COST vs EQIX
+0.642
Moderate positive
When one moves up, the other tends to follow.
Costco Wholesale Corp
↗COST
Founded in 1983, Costco Wholesale now operates a global chain of membership-based warehouse clubs, delivering high-quality goods and services at consistently low prices. As of its most recent fiscal year, Costco operated approximately 910 warehouses, serving more than 80 million members across its three geographic segments: Costco US (approximately 73% of total revenue), Costco Canada (13%), and Costco International (14%).Costco's core value proposition—quality products at unbeatable prices—has yielded consistently strong member renewal rates (93% in the US and Canada and nearly 90% internationally). About 55% of Costco's fiscal 2025 revenue came from its grocery offerings, and another 25% from general merchandise.
Market cap 451.9B
Equinix, Inc. Common Stock REIT
↗EQIX
Equinix is one of the leading providers of cloud- and carrier-neutral data centers, offering colocation and interconnection services to hyperscalers and businesses. Equinix operates 270 properties in 77 metropolitan areas across 36 countries, serving over 10,000 customers. About 70% of Equinix's revenue comes from renting physical space, which allows hyperscalers and other clients to store servers, data storage, and networking equipment. The other 30% of revenue is generated primarily through interconnection services (20%) and other managed services (10%).
Market cap 100.2B · 13,716 employees
Time Series
Relative Performance
Who Moves First
in sync
COST and EQIX tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.642 (they moved in the same direction).
Do They Crash Together?
Correlation by Market Regime
How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.
Both Rising
+0.538
17 periods · Return correlation when both series rose
Both Falling
+0.712
9 periods · Return correlation when both series fell
Diverging
-0.713
9 periods · Return correlation when series moved apart
R-Squared
41.2%
Share of variance in one series explained by the other.
Trend Agreement
63.3%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,254
Deep shared window — 1,254 usable pairs.
Significance
p < 0.001
95% CI: [0.608, 0.674]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points survived the daily window.
Raw input
1,254
1,254
Normalized
1,254
1,254
Prepared
1,254
1,254
Aligned
1,254
1,254
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Equinix, Inc. Common Stock REIT
EQIX
Market cap 100.2B · 13,716 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
0.2657
Linear regression slope.
Intercept
598.4372
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
COST
Costco Wholesale Corp
Highest
+0.977
Republic Services Inc.
RSG · 1,254 data points
Lowest
-0.912
Fiserv, Inc. Common Stock
FISV · 644 data points
EQIX
Equinix, Inc. Common Stock REIT
Highest
+0.649
NetFlix Inc
NFLX · 1,254 data points
Lowest
+0.111
Johnson & Johnson
JNJ · 1,254 data points
Saved 7 hours ago · ID: stock-cost-vs-stock-eqix-daily